River Discharge and Environmental Stress in Galveston Bay and the Guadalupe Estuary, Texas

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dc.acquisition-srcen_US
dc.contract-noen_US
dc.contributor.authorMiller, Cen_US
dc.contributor.authorLi, H-Pen_US
dc.contributor.authorRoelke, Den_US
dc.contributor.authorDavis, Sen_US
dc.contributor.authorLiu, K-J, Gable, Gen_US
dc.contributor.otherProceedings of the Eighth Biennial State of the Bay Symposium January 23-25, 2007en_US
dc.date.accessioned2010-02-15T16:46:48Z
dc.date.available2010-02-15T16:46:48Z
dc.date.issuedJan. 25, 2007en_US
dc.degreeen_US
dc.description[np]en_US
dc.description-otheren_US
dc.description.abstractLoading of nutrients and organic carbon affect many aspects of plankton communities, which include primary production, community respiration and microbial loop interactions. Furthermore, manipulation of inflows may serve as a management tool designed to influence lower food web interactions. The purpose of this study was to understand the freshwater inflow impact on the spatial and temporal plankton dynamics. To achieve this we examined spatial and temporal characterizations of the pelagic environment in two bay systems of Texas, Galveston Bay and the Guadalupe Estuary. Characterizations included water quality parameters (temperature, salinity, oxygen saturation and turbidity etc.), nutrients, dissolved organic carbon, net productivity and respiration. All of these parameters were measured monthly (from Jan 2005 to Aug 2006) at 6 stations in Galveston Bay and 7 stations in the Guadalupe Estuary. Our preliminary analyses showed that light penetration was positively correlated with freshwater discharge, where the relationship became stronger at stations located closer to the point of river discharge. Also correlated with discharge was dissolved inorganic nitrogen and phosphate concentrations, where the N:P ratio was ~10. Dissolved organic carbon, however, showed no obvious temporal variation throughout these two ecosystems, but the spatial variations related to the distance from the point of river discharge. In addition, primary productivity showed no relationship with river discharge or nutrients, which suggests that other factors might be important, such as temperature. We are currently analyzing plankton community shifts in response to discharge.en_US
dc.description.urien_US
dc.geo-codeGalveston Bayen_US
dc.geo-codeGuadelupe Estuaryen_US
dc.history1-20-09 kswen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/18630
dc.latitudeen_US
dc.locationNot available in house - Please contact GBIC for assistanceen_US
dc.longitudeen_US
dc.notesen_US
dc.publisherGalveston Bay Estuary Programen_US
dc.relation.ispartofseries10145.00en_US
dc.relation.urihttp://gbic.tamug.edu/gbeppubs/sobviii/sobviii_rpr.htm#Lien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectfreshwater inflowen_US
dc.subjectnutrientsen_US
dc.subjectorganic carbonen_US
dc.subjectplanktonen_US
dc.subjectproductivityen_US
dc.subjectrespirationen_US
dc.titleRiver Discharge and Environmental Stress in Galveston Bay and the Guadalupe Estuary, Texasen_US
dc.typeCONFen_US
dc.universityen_US
dc.vol-issueen_US

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